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Early Triassic disaster and opportunistic foraminifers in South China

Version 2 2024-06-06, 10:10
Version 1 2016-01-21, 16:19
journal contribution
posted on 2024-06-06, 10:10 authored by H Song, J Tong, PB Wignall, M Luo, L Tian, Y Huang, D Chu
Survival and recovery are important dynamic processes of biotic evolution during major geological transitions. Disaster and opportunistic taxa are two significant groups that dominate the ecosystem in the aftermath of mass extinction events. Disaster taxa appear immediately after such crises whilst opportunists pre-date the crisis but also bloom in the aftermath. This paper documents three disaster foraminiferal species and seven opportunistic foraminiferal species from Lower Triassic successions of South China. They are characterized by extreme high abundance and low diversity and occurred occasionally in Griesbachian, Smithian and Spathian strata. The characteristics (small size, simple morphology) and stratigraphic ranges of these groups suggest that r-selection is a commonly used strategy for survivors to cope with either harsh post-extinction conditions and/or environments lacking incumbents.

History

Journal

Geological magazine

Volume

153

Pagination

298-315

Location

Cambridge, Eng.

ISSN

0016-7568

eISSN

1469-5081

Language

eng

Publication classification

C Journal article, C1 Refereed article in a scholarly journal

Copyright notice

2015, Cambridge University Press

Issue

Special issue 2

Publisher

Cambridge University Press